html,body{
	margin: 0;
	padding: 0;
}

header{
	width: 100%;
	height: 66px;
	line-height: 66px;
	position: fixed;
	top: 0;
	background: rgb(50,71,96);
	color:rgb(215,223,234);
	z-index: 10;
}
header img{
	position: absolute;
	top: 10px;
	left: 15px;
}
nav{
	width: 180px;
	height: 100%;
	position: absolute;
	padding:0px 5px;
	top: 66px;
	left: 0;
	z-index: 9;
	background: rgb(232,235,239);
	color:rgb(53,75,102);
	position: fixed;
	border-right: 1px solid rgb(191,200,216);
}
nav ul{
	width:100%;
	margin:0px auto;
	padding: 0;
}
nav ul li{
	list-style: none;
	line-height: 38px;
	padding: 10px;
	padding-left: 15px;
	text-align: left;
	width: 100%;
	border-bottom: 1px solid rgb(191,200,216);
}
nav ul li a{
	color:rgb(53,75,102);
	font-weight: 700;
	font-size: 16px;
	font-family: '黑体';
}
nav ul li a:active{
	background:#dceded;
}
nav ul li a img{
	margin-right:12px;
}
iframe{
	width: 100%;
	height:870px;
	float: left;
	padding-left: 200px;
	padding-top: 66px;
}
header span{
	float: right;
	margin-right: 20px;
}
.current{
	
}
nav ul li:hover{
	background:#dceded;
}